US lawmakers and the White House braced for a hectic coming week in Washington, with Republicans readying new legislation to repeal Obamacare as Donald Trump seeks a victory to cap his 100th day as president. After an embarrassing health care defeat last month, Trump has suddenly heaped pressure on Republican leadership by saying he expects a vote on a revived version of the bill "next week or shortly thereafter." "We're doing very well on health care. We'll see what happens," Trump told reporters Thursday. "It's evolving."